Means for removably securing cam plates to cam shafts



Aug. M, 1923.

E. E. TALBOT MEANS FOR REMOVABLY SECURING CAM PLATES TO CAM SHAFTS FiledDec. 21 'i921 s sheets-sheet l -ug 114, 1923. v Tlfk@ E. E. TALBOT MEANSFOR REMOVABLY SECURING CAM PLATES TO CAM SHAFTS Filed Dec, 21, 1921 :ssheets-sheet 2 Aug. M, 1923. l@

E. E. TALBOT MEANSFOR REMOVABLY SECURING CAM PLATES TO CAM SHAFTS FiledDec, 21, 1921 3 Smeets-Shea?r 3 w man Patented Aug. 14, 19.23.

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- i marsa er atrio-is..

nvARIsTE ERNEST TALBOT, or FALL iriver.,amsellerie-snrIrs.

MEANS FOR REMQ'VABLY SEGURING GAM PLATES GAM SBAIFTS.

`Application filed December 21, 1921. Serial No. 523,530.

Heretofore, when apicl-cam has been re-V moved becauseoi breakage, orbeing worn, much time, for example, tive or six hours, is lost, inremoving! the camand restoring` it, or a substitute, to normal operativeposition. This will be evident when one remembers that, to changeyorreplace a pick cam, one

must pull oli' the top gear from .the crankV l shaft; the bottomgear'irom the cam-shalt;

loosen the cam-.shaft bearings; remove" the cam-shaft by sliding it outof the loom altogether, and thenremovc the camepl'ate. Gbviously,about'tlie same time would be re uired in the oaeration. oi' re alacinfrthc` Y ,l Y n parts previously removed.'

These various operations. result in loss of production of the'v loomduring the repair period; frequently in the loss of gears having to bebroken to get them oiithe shaft; in loss of the timing of the loom,andhence the time required in restoring the parts of the loom to theirproper'adjustment, 'for their seasonable operations. Y f

In short, a broken or worn-out pick-cani means a substantial loss ofmoney.

New, the principal object of my invention, which is to reduce this loss,1 attain by the means hereinafter disclosed and claimed.

ln the drawings illustrating the principle of my invention, and thebestv mode now known to me of embodying the same in operative structure,

Fig. 1 is a rear elevation of my invention;

Fign2 is a vertical section, on line 2 2, Fig. 1, while l"ig 3 is ahorizontal section, on line 3 3,

10. 4 shows my invention in front eleva- Fig. 7 .shows the same view ofthe open side cam-plate member Yof thev cam-plate.

' F igs. 8, and 10 are'sections, respectively, on lines 8 8, 9 9,10`-10, Fig. 1.

'F ig. 11 is a front elevation ot my inven tion, the cam-pointjmemberbeing moved out of engagement with, and awayfrom, the hub-plate, and thecampl`ate member; while Fig. 12 is a like View, oi" the cam-pointmember, and the cam-plate'member of the cam-plate,vbeing moved out ofengagement with, and away from the hub-plate.

A hubplate 15 in the form of a disk, isy

fixed by set-screws 16 to arcani-shaft 17 suitably mounted in bearingsina loom, not shown. On its operating tace is a series ot raised radiallocking corrugations 18 designed to `interlock with similar corrugations19 upon a cam-plate made up ot a cam-plate member 20 and a cam-pointmember 21. Y The canrplate member has a parallel-sided opening 22, Figs.4, 7, 11 and 12, extending from its'opera-tingsurtace 23 to itssemi-circular bore 24, equal to the diameter of the hubv 25 ofl thehub-plate 15 with which the boreris designed to be in engagement. Thecampoint member 21 has correspondingly parallel sides 26 Fig. 6, to titthe sides 22 ol the opening vot the cam-plate member, and asemi-circular bore `27to lit the side of the hub 25 ot the hub-plate 15,opposite that engaged bythe'bore 24 of the camp-plate member 20.r Thesesides are preferably parallel, to obviate the tendency of the cam-pointmember to work loose, were the sides forming an acute angle.

'lo bind the cam-plate to the hub-plate, suitable bolts. washers andnuts are employed, one bolt. 28 being passed through ad` justing slots29, 30 respectively, in the campoint member and the hub-plate; a. secondbolt- 1,` through the cam-point member and cam-plate member; and twoother bolts 32 and 33 respectively through the adjusting slots 34 and 35in the cam-plate member, and the adjusting slots 3G and 87 inthevhubplate; the radial corrugaticns 18 and 19 0i2 the adjacent faces ofthe hub-plate and the cam-plate, interlocking and bindingall the partsrigidly together, both radially and longitudinally.

rThe method of using this` embodiment of my 'invention has alreadybecome obvious, probably. Should it be necessary to remove the cam-pointmember 21, see Figs. 3, 4 and 11, then all that isl required is aremoval of :the two-- bolts*` 28and 31passingthrough said membeig and,Haf longitudinal? movement of said member; this disengages theinterlocking corrugations 18 and 19, and the camthat the camrpletemember 20,1*e 1,1, re-Y mains locked tothe hub-plate 15, so that whenthe cam-point member, newer old,.is

replaced in the slottedy cam-plate member, thertiming of the operationof thel lcam remains las originally,determined.4

Should it beA essential that the cam-plate member 20 be removed, theniny addition to the removal Aof the cam-point member,justkde'seribechthe bolts 32 and 33 securing ythe cam-plate member tothe hub plate, are

i taken out, the cameplate member first moved longitudinally. of thehub-plate, enough to vdisengage the.lockingcorrugations 18V and 19j-andsecond, moveclradially away from the cam-shaft 17 Fig. 12, inthedirection of the axis of the open slot 22%22, 'in the cam-plate member.Y v p l y To replace lthe cam-plate member and, or,

' theycam-point member, a reversal of the above-described operations,iste be pursued.

Attention is called to the fact that ynotwithstanding` the hub-plate issecured to the sha-ft by set screws, the cam-plate 20, 21 may,

' vwithin `certain limits, be advancedv or retarded in relation to thehub-plate, byreason of theV bolts and adjusting slots 30, 34 and 35,Fig. 5, in thehub-plate.

hou'ld the entire cam-plate :have tov be removed from the Vhubfplate',then non-inter#- ference with they timingof the loom would befobtainedby marking on them their proper co-op'erating" positions, before theremoval ofthe cam-plate,- By these markingmthe. cam-plate member couldbe exactly replaced inrelation to the hub-,plate fortheproper timing .ofthe operations Vof they loom.y

To change or replace my pick cam-'plate requires` not mpre *tha-r1,`twenty minutes 1f only @the amlpoint, member'=-, has'"t0y be `removed,returned or replaced, plainly a much shorter timeis needed.

' It'i's t0 be "notedthat'nomachine workis requiredwon any of the parts,v,iz .thecam` 'point vmember or Athe open Iside'cam-plate ,in ember, forthey are castings, the only `machine i'ork'being boring and reaming thehub-plate, whichpractically never haste be Y removed.v Y y In short, myinvention is durable', cheap in cost, `.quickly change'dor replaced inthe loom, and reduces greatly the losses arisingy 'from the use of pick.cams heretofore used.

Desiring Vto. protect invention-in the broadest manner legally possible,What claim is:

A pick-cam comprising a hub-plate xed to the cam-shaft ofaloonrnandhaving locking corrugations upon its operative ft'ace, a cam platemember having4 a vrparallel sided. opening which allows `said member tobe moved sidewiseinto operative position upon the cam-shaft; a cam-pointmember having I 'Y parallel sides permitting said member to be movedinto operative position 1nsaiol side opening of the cam-plate member;locking engage the corresponding corrugations upon the Vface of thehub-plategand means for se-` curing the cam-plate member, `the campointjcorrugations'upon eachmof saidmembers to,

member and the hub-plate rieidly together;

all,V designedlto permit said ymembers to be removed or replaced withoutdisturbing the`

